Vent-cap for soil-pipes.



I. II/I. scIIREI/Is VENT CAP FUR SOIL FIRES. APPLICATION FILED SEPT. 22.|917.

1.256,@45. l atented Feb. 12, 1918.

WIMINVENTOR JOSEPH M. SCHREIVIS, OF SAGNAW, MICHIGAN.

VENT-CAP FOR SOIL-PIPES.

Specification of Letters Patent.

Patented lFebu l2, i918.,

Application ile September 22, 1917. Serial No. 192,685.

To all whom it may concern Be it known that I, Josnrrr M. Scrrnnirs, acitizen or the United States, residing at Saginaw, in the county ofSaginaw and State oi' lilichigan, have invented certain new and usefulImprovements in Vent-Caps for Soil-Pipes; and l do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to caps for soil pipes and the like. rlhe objectof the improvenient is to provide a strong and durable soil pipe cap oflight construction that can be easily and quickly attached to a soilpipe and clamped thereto Without the aid of special tools other than ascrew driver or its equivalent.

My invention is illustrated in the accompanying drawings, in whichFigure l is a top plan view of the cap.

Fig. 2 is a part sectional side elevation of the cap applied to a soilpipe.

Fig. 3 is a side view oi' the cap with the clamping or locking deviceexpanded and showing in dotted lines the same device in its retractedposition. The clamping bolt is omitted from this view in solid lines forclearness in illustrating.

As is clearly shown in the drawings, the device comprises a metal cap l,which is preferably stamped from sheet metal and is preferably in theform oi' an inverted bowl. rlhe cap is provided with a central aperture2, and a plurality of depressed pockets 3 formed by the saine stampingoperation by which the cap l is formed. Each pocket has a rear wall aand a horizontal bottom 5. The pockets are preferably arranged in pairsdiametrically opposite each other, as shown in Fig. l.

A clamping frame is secured to the hori- Zontal bottoms 5 of the twoopposite pockets, as shown in Figs. 2 nand 3. This frame comprises apair of downwardly extending arms 6, 6 secured at their upper ends tothe bottoms 5 and adapted to project down into the pipe 7.

The lower ends of the arms 6, 6 are connected by a downwardly bowedflexible cross brace 8 preferably made of a flat steel bar or itsequivalent. A similar upwardly bowed cross brace 9 connects the arms 6,6 above the brace S.

An internally threaded boss or nut 10 is carried by the flexible crossbrace 8 and receives the threaded end of a bolt 1l. The upper end of thebolt passes loosely through an opening in the upwardly bowed brace 9 andis provided with a lower collar or washer l2, which may be held in placeby a Cotter pin 13, and is also provided with an upper washer 14; `oflarge diameter.

When the bolt l1 is tightened by means of a screw driver the flexiblebowed cross braces 8 and 9 are forced toward each other and partlystraightened, thus forcing the lower parts or' the arms 6, 6 outward toyieldingly clamp against the inner walls of the pipe 7, as indicated inFig. 8.

The device is applied to the pipe by first inserting the arms 6, 6 intothe pipe and pushing the cap down until the bottoms 5 of the pockets 3rest on the end of the pipe. A screw driver or equivalent tool is theninserted through the central aperture 2 and the bolt 1l is tightened.

To remove the cap 6 it is only necessary to unscrew the bolt 1lsuihciently to release the clamping frame, after which the device may belifted from the pipe.

To prevent sticks, etc., from being dropped into the pipe 7, l prefer tomaire the upper washer la of sutiiciently large diameter to catch anysuch articles that might be dropped through the opening 2, whichotherwise might obstruct the soil pipe.

Having thus described my invention, what l claim and desire to secure byLetters Patent is:

ln a soil pipe, the combination of a pressed metal cap havingdiametrically opposite pockets formed therein, a pair of downwardlyextending flexible arms secured at their upper ends to the bottoms ofsaid pockets, a downwardly bowed flexible cross brace secured to thelower ends of said arms, an upwardlyT bowed flexible cross centralaperture looatedabove the head of brace secured to said armsintermediate their said bolt, for the purposes set forth. Y V10 length;a threaded boss carried by Said In testimony whereof, l affix mySignaloWer cross brace, a threaded bolt passing ture in presence of'tWoWitnesses.

'l looSely through theV upper erossbraee and JOSEPH M. SCHH-EMS.

threaded into said boss, an upper and a Witnesses: lower Washer on Saidbolt, said upper Washer NELLIE M. ANGUS, of large diameter, said capformed with a ROY'WALLISV.

Oopies of this patent may be obtained for ve cents each, by addressingthe "Commissioner of Patents,

' Washington, D. C.

